1. MuCool Test Area RF Workshop Derun Li Center for Beam Physics Lawrence Berkeley National Laboratory November 15, 2010

2. MAP RF Goals Develop a workable solution for high gradient NCRF operating in B fields between approximately 3 and 6 T. Support sub-assembly prototyping for the 6D cooling bench test. 1.Guggenheim 2.FOFO Snake 3.HCC 2 MTA RF Workshop, D. Li, Lawrence Berkeley National Lab, November 15, 2010

3. Workshop Goals Review the status of the MTA RF programs Review the status of the MTA RF programs Review proposed future RF programs Review proposed future RF programs Discuss RF R&D strategy to respond to the comments and recommendations from the MAP Review in August 2010 Discuss RF R&D strategy to respond to the comments and recommendations from the MAP Review in August 2010 – Scope of the work of MAP RF proposal – Resources – Schedule and milestones – Concerns/Risks 3 MTA RF Workshop, D. Li, Lawrence Berkeley National Lab, November 15, 2010

4. Current RF Programs Targeted R&D programs to understand the RF breakdown problems in magnetic fields Targeted R&D programs to understand the RF breakdown problems in magnetic fields  a workable solution  a workable solution —Physics models and numerical simulations, —Experimental programs and new techniques at 805 and 201 MHz 4 MTA RF Workshop, D. Li, Lawrence Berkeley National Lab, November 15, 2010  The 805-MHz with RF buttons  High pressure cavity  ALD to eliminate field emission  Be wall cavity  Box cavity to study E x B effects  Magnetic field insulated cavity  Physics model to understand RF breakdown in magnetic fields

5. Future RF Programs Magnetically insulated box cavity Magnetically insulated box cavity Beam test of HPRF cavity Beam test of HPRF cavity The 805-MHz RF button tests (Be) The 805-MHz RF button tests (Be) Update design of 805-MHz cavity Update design of 805-MHz cavity Dielectric loaded cavity Dielectric loaded cavity Design and fabrication of Be-wall cavity Design and fabrication of Be-wall cavity ALD processed buttons in pillbox cavity ALD processed buttons in pillbox cavity 201-MHz cavity test with coupling coil magnet at MTA 201-MHz cavity test with coupling coil magnet at MTA Complete MICE 201-MHz cavity Complete MICE 201-MHz cavity Single cavity vessel Single cavity vessel 5 MTA RF Workshop, D. Li, Lawrence Berkeley National Lab, November 15, 2010

6. Comments from the MAP Review 6 MTA RF Workshop, D. Li, Lawrence Berkeley National Lab, November 15, 2010 More cavities and tests International RF Workshop

7. Comments from the MAP Review 7 MTA RF Workshop, D. Li, Lawrence Berkeley National Lab, November 15, 2010 Concerns on beryllium

8. RF Recommendations from MAP Review 8 MTA RF Workshop, D. Li, Lawrence Berkeley National Lab, November 15, 2010

9. In respond to the MAP Review Update RF proposal Update RF proposal – Revisit previous plans + this WS – Schedules and milestones – Exploring more RF tests in magnetic fields Design and build more cavities + RF tests Design and build more cavities + RF tests SLAC group: 2-T SC magnet and tests at s- or x-band frequencies SLAC group: 2-T SC magnet and tests at s- or x-band frequencies – International workshop on high-gradient RF cavities Wish we have a productive workshop Wish we have a productive workshop MTA RF Workshop, D. Li, Lawrence Berkeley National Lab, November 15, 2010 9